RM4875 4/98 REV A

Page 3

Output Specifications

Rectifier Failure Alarm (RFA)

Problems occurring because of an unacceptable relation-

ship between the output power and load conditions will

cause a Rectifier Failure Alarm (RFA). This alarm consists

of a red LED and a flashing green OK LED. Conditions

which may lead to an RFA are:

Low Current - Output current has decreased to below

5% of its rated value.

Unit Shutdown - Any shutdown occurrence due to

overvoltage, external shutdown command, unacceptable

ambient temperature conditions or low AC input voltage.

Load Sharing Terminal Pin Out Of Range - The

terminal pin is out of range.

Remote Control Terminal Out Of Range - The remote

control terminal pins are out of range.

Line Sag - This condition occurs when the nominal

voltage decreases below 180V. Normal range is 208-

240V.

Fan Malfunction - The fan has stopped operating or is

not providing the airflow needed to cool the unit.

Over Temperature - The ambient temperature has

exceeded 65°C.

High Voltage Shutdown (HVSD)

The unit’s built-in high voltage limit is permanently set at

60V. When internal shutdown occurs, the unit may be

restarted by a local switch or by a remote signal.

Surge Protection

The unit will withstand lightning and input surges of

6000V/3000A.

Under Voltage Protection

operation is automatically power limited.

PROTECTION, ALARM AND CONTROL SYSTEMS

Parameter

Conditions

Min

Typ

Max

Units

Voltage Adjustment Range

float voltage

48

56

equalize voltage

52

60

Regulation

0-100% load within

specified input voltage and frequency range

± .5

%

Load Current

within a 10 - 100% rating

±10

%

Hold-Up Time

nominal AC line

>16

mS

Filtering

Voice band

<32

dBrnc

Wide band noise

@ 20 MHz

<250

mV p-p

ENVIRONMENTAL

Temperature

Operating

-40

+65

°C

-40

149

°F

Storage

-50

+85

°C

-58

185

°F

Humidity

non-condensing

0

95

%

Altitude

0

7000

ft.

0

2133

m

Heat Dissipation

@54V

264

Btu/hr

Audible Noise

5 ft. from any vertical surface

<55

dBa